DefaultFontMapper.java

/*
 * Copyright 2004 by Paulo Soares.
 *
 * The contents of this file are subject to the Mozilla Public License Version 1.1
 * (the "License"); you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the License.
 *
 * The Original Code is 'iText, a free JAVA-PDF library'.
 *
 * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
 * the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
 * All Rights Reserved.
 * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
 * are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
 *
 * Contributor(s): all the names of the contributors are added in the source code
 * where applicable.
 *
 * Alternatively, the contents of this file may be used under the terms of the
 * LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
 * provisions of LGPL are applicable instead of those above.  If you wish to
 * allow use of your version of this file only under the terms of the LGPL
 * License and not to allow others to use your version of this file under
 * the MPL, indicate your decision by deleting the provisions above and
 * replace them with the notice and other provisions required by the LGPL.
 * If you do not delete the provisions above, a recipient may use your version
 * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the MPL as stated above or under the terms of the GNU
 * Library General Public License as published by the Free Software Foundation;
 * either version 2 of the License, or any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
 * details.
 *
 * If you didn't download this code from the following link, you should check if
 * you aren't using an obsolete version:
 * https://github.com/LibrePDF/OpenPDF
 */
package com.lowagie.text.pdf;

import com.lowagie.text.ExceptionConverter;

import java.awt.Font;
import java.io.File;
import java.util.HashMap;


/**
 * Default class to map awt fonts to BaseFont.
 *
 * @author Paulo Soares (psoares@consiste.pt)
 */

public class DefaultFontMapper implements FontMapper {

  /**
   * A representation of BaseFont parameters.
   */
  public static class BaseFontParameters {

    /**
     * The font name.
     */
    public String fontName;
    /**
     * The encoding for that font.
     */
    public String encoding;
    /**
     * The embedding for that font.
     */
    public boolean embedded;
    /**
     * Whether the font is cached of not.
     */
    public boolean cached;
    /**
     * The font bytes for ttf and afm.
     */
    public byte[] ttfAfm;
    /**
     * The font bytes for pfb.
     */
    public byte[] pfb;

    /**
     * Constructs default BaseFont parameters.
     *
     * @param fontName the font name or location
     */
    public BaseFontParameters(String fontName) {
      this.fontName = fontName;
      encoding = BaseFont.CP1252;
      embedded = BaseFont.EMBEDDED;
      cached = BaseFont.CACHED;
    }
  }

  /**
   * Maps aliases to names.
   */
  private HashMap<String, String> aliases = new HashMap<>();
  /**
   * Maps names to BaseFont parameters.
   */
  private HashMap<String, BaseFontParameters> mapper = new HashMap<>();

  /**
   * Returns a BaseFont which can be used to represent the given AWT Font
   *
   * @param  font    the font to be converted
   * @return a BaseFont which has similar properties to the provided Font
   */

  public BaseFont awtToPdf(Font font) {
    try {
      BaseFontParameters p = getBaseFontParameters(font.getFontName());
      if (p != null) {
        return BaseFont.createFont(p.fontName, p.encoding, p.embedded, p.cached, p.ttfAfm, p.pfb);
      }
      final String fontKey;
      final String logicalName = font.getName();

      if (logicalName.equalsIgnoreCase("DialogInput") || logicalName.equalsIgnoreCase("Monospaced") || logicalName
          .equalsIgnoreCase("Courier")) {

        if (font.isItalic()) {
          if (font.isBold()) {
            fontKey = BaseFont.COURIER_BOLDOBLIQUE;

          } else {
            fontKey = BaseFont.COURIER_OBLIQUE;
          }

        } else {
          if (font.isBold()) {
            fontKey = BaseFont.COURIER_BOLD;

          } else {
            fontKey = BaseFont.COURIER;
          }
        }

      } else if (logicalName.equalsIgnoreCase("Serif") || logicalName.equalsIgnoreCase("TimesRoman")) {

        if (font.isItalic()) {
          if (font.isBold()) {
            fontKey = BaseFont.TIMES_BOLDITALIC;

          } else {
            fontKey = BaseFont.TIMES_ITALIC;
          }

        } else {
          if (font.isBold()) {
            fontKey = BaseFont.TIMES_BOLD;

          } else {
            fontKey = BaseFont.TIMES_ROMAN;
          }
        }

      } else {  // default, this catches Dialog and SansSerif

        if (font.isItalic()) {
          if (font.isBold()) {
            fontKey = BaseFont.HELVETICA_BOLDOBLIQUE;

          } else {
            fontKey = BaseFont.HELVETICA_OBLIQUE;
          }

        } else {
          if (font.isBold()) {
            fontKey = BaseFont.HELVETICA_BOLD;
          } else {
            fontKey = BaseFont.HELVETICA;
          }
        }
      }
      return BaseFont.createFont(fontKey, BaseFont.CP1252, false);
    } catch (Exception e) {
      throw new ExceptionConverter(e);
    }
  }

  /**
   * Returns an AWT Font which can be used to represent the given BaseFont
   *
   * @param  font    the font to be converted
   * @param  size    the desired point size of the resulting font
   * @return a Font which has similar properties to the provided BaseFont
   */

  public Font pdfToAwt(BaseFont font, int size) {
    String[][] names = font.getFullFontName();
    if (names.length == 1) {
      return new Font(names[0][3], Font.PLAIN, size);
    }
    String name10 = null;
    String name3x = null;
    for (String[] name : names) {
      if (name[0].equals("1") && name[1].equals("0")) {
        name10 = name[3];
      } else if (name[2].equals("1033")) {
        name3x = name[3];
        break;
      }
    }
    String finalName = name3x;
    if (finalName == null) {
      finalName = name10;
    }
    if (finalName == null) {
      finalName = names[0][3];
    }
    return new Font(finalName, Font.PLAIN, size);
  }

  /**
   * Maps a name to a BaseFont parameter.
   *
   * @param awtName the name
   * @param parameters the BaseFont parameter
   */
  public void putName(String awtName, BaseFontParameters parameters) {
    mapper.put(awtName, parameters);
  }

  /**
   * Maps an alias to a name.
   *
   * @param alias the alias
   * @param awtName the name
   */
  public void putAlias(String alias, String awtName) {
    aliases.put(alias, awtName);
  }

  /**
   * Looks for a BaseFont parameter associated with a name.
   *
   * @param name the name
   * @return the BaseFont parameter or <CODE>null</CODE> if not found.
   */
  public BaseFontParameters getBaseFontParameters(String name) {
    String alias = aliases.get(name);
    if (alias == null) {
      return mapper.get(name);
    }
    BaseFontParameters p = mapper.get(alias);
    if (p == null) {
      return mapper.get(name);
    } else {
      return p;
    }
  }

  /**
   * Inserts the names in this map.
   *
   * @param allNames the returned value of calling {@link BaseFont#getAllFontNames(String, String, byte[])}
   * @param path the full path to the font
   */
  public void insertNames(Object[] allNames, String path) {
    String[][] names = (String[][]) allNames[2];
    String main = null;
    for (String[] name : names) {
      if (name[2].equals("1033")) {
        main = name[3];
        break;
      }
    }
    if (main == null) {
      main = names[0][3];
    }
    BaseFontParameters p = new BaseFontParameters(path);
    mapper.put(main, p);
      for (String[] name : names) {
          aliases.put(name[3], main);
      }
    aliases.put((String) allNames[0], main);
  }

  /**
   * Inserts all the fonts recognized by iText in the
   * <CODE>directory</CODE> into the map. The encoding
   * will be <CODE>BaseFont.CP1252</CODE> but can be changed later.
   *
   * @param dir the directory to scan
   * @return the number of files processed
   */
  public int insertDirectory(String dir) {
    File file = new File(dir);
    if (!file.exists() || !file.isDirectory()) {
      return 0;
    }
    File[] files = file.listFiles();
    if (files == null) {
      return 0;
    }
    int count = 0;
    for (File file1 : files) {
      file = file1;
      String name = file.getPath().toLowerCase();
      try {
        if (name.endsWith(".ttf") || name.endsWith(".otf") || name.endsWith(".afm")) {
          Object[] allNames = BaseFont.getAllFontNames(file.getPath(), BaseFont.CP1252, null);
          insertNames(allNames, file.getPath());
          ++count;
        } else if (name.endsWith(".ttc")) {
          String[] ttcs = BaseFont.enumerateTTCNames(file.getPath());
          for (int j = 0; j < ttcs.length; ++j) {
            String nt = file.getPath() + "," + j;
            Object[] allNames = BaseFont.getAllFontNames(nt, BaseFont.CP1252, null);
            insertNames(allNames, nt);
          }
          ++count;
        }
      } catch (Exception e) {
      }
    }
    return count;
  }

  public HashMap<String, BaseFontParameters> getMapper() {
    return mapper;
  }

  public HashMap<String, String> getAliases() {
    return aliases;
  }
}